2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Copyright (C) 2009 VMware, Inc. All Rights Reserved.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice shall be included
16 * in all copies or substantial portions of the Software.
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
22 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * glTexGen-related functions
33 #include "main/glheader.h"
34 #include "main/context.h"
35 #include "main/enums.h"
36 #include "main/macros.h"
37 #include "main/mfeatures.h"
38 #include "main/texgen.h"
39 #include "main/texstate.h"
40 #include "math/m_matrix.h"
41 #include "main/dispatch.h"
45 * Return texgen state for given coordinate
47 static struct gl_texgen
*
48 get_texgen(struct gl_context
*ctx
, struct gl_texture_unit
*texUnit
,
51 if (ctx
->API
== API_OPENGLES
) {
52 return (coord
== GL_TEXTURE_GEN_STR_OES
)
53 ? &texUnit
->GenS
: NULL
;
58 return &texUnit
->GenS
;
60 return &texUnit
->GenT
;
62 return &texUnit
->GenR
;
64 return &texUnit
->GenQ
;
72 _mesa_TexGenfv( GLenum coord
, GLenum pname
, const GLfloat
*params
)
74 struct gl_texture_unit
*texUnit
;
75 struct gl_texgen
*texgen
;
76 GET_CURRENT_CONTEXT(ctx
);
77 ASSERT_OUTSIDE_BEGIN_END(ctx
);
79 if (MESA_VERBOSE
&(VERBOSE_API
|VERBOSE_TEXTURE
))
80 _mesa_debug(ctx
, "glTexGen %s %s %.1f(%s)...\n",
81 _mesa_lookup_enum_by_nr(coord
),
82 _mesa_lookup_enum_by_nr(pname
),
84 _mesa_lookup_enum_by_nr((GLenum
) (GLint
) *params
));
86 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
87 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glTexGen(current unit)");
91 texUnit
= _mesa_get_current_tex_unit(ctx
);
93 texgen
= get_texgen(ctx
, texUnit
, coord
);
95 _mesa_error(ctx
, GL_INVALID_ENUM
, "glTexGen(coord)");
100 case GL_TEXTURE_GEN_MODE
:
102 GLenum mode
= (GLenum
) (GLint
) params
[0];
103 GLbitfield bit
= 0x0;
104 if (texgen
->Mode
== mode
)
107 case GL_OBJECT_LINEAR
:
108 bit
= TEXGEN_OBJ_LINEAR
;
111 bit
= TEXGEN_EYE_LINEAR
;
114 if (coord
== GL_S
|| coord
== GL_T
)
115 bit
= TEXGEN_SPHERE_MAP
;
117 case GL_REFLECTION_MAP_NV
:
119 bit
= TEXGEN_REFLECTION_MAP_NV
;
121 case GL_NORMAL_MAP_NV
:
123 bit
= TEXGEN_NORMAL_MAP_NV
;
129 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(param)" );
132 if (ctx
->API
!= API_OPENGL
133 && (bit
& (TEXGEN_REFLECTION_MAP_NV
| TEXGEN_NORMAL_MAP_NV
)) == 0) {
134 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(param)" );
138 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
140 texgen
->_ModeBit
= bit
;
144 case GL_OBJECT_PLANE
:
146 if (ctx
->API
!= API_OPENGL
) {
147 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(param)" );
150 if (TEST_EQ_4V(texgen
->ObjectPlane
, params
))
152 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
153 COPY_4FV(texgen
->ObjectPlane
, params
);
161 if (ctx
->API
!= API_OPENGL
) {
162 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(param)" );
166 /* Transform plane equation by the inverse modelview matrix */
167 if (_math_matrix_is_dirty(ctx
->ModelviewMatrixStack
.Top
)) {
168 _math_matrix_analyse(ctx
->ModelviewMatrixStack
.Top
);
170 _mesa_transform_vector(tmp
, params
,
171 ctx
->ModelviewMatrixStack
.Top
->inv
);
172 if (TEST_EQ_4V(texgen
->EyePlane
, tmp
))
174 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
175 COPY_4FV(texgen
->EyePlane
, tmp
);
180 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGenfv(pname)" );
184 if (ctx
->Driver
.TexGen
)
185 ctx
->Driver
.TexGen( ctx
, coord
, pname
, params
);
189 static void GLAPIENTRY
190 _mesa_TexGeniv(GLenum coord
, GLenum pname
, const GLint
*params
)
193 p
[0] = (GLfloat
) params
[0];
194 if (pname
== GL_TEXTURE_GEN_MODE
) {
195 p
[1] = p
[2] = p
[3] = 0.0F
;
198 p
[1] = (GLfloat
) params
[1];
199 p
[2] = (GLfloat
) params
[2];
200 p
[3] = (GLfloat
) params
[3];
202 _mesa_TexGenfv(coord
, pname
, p
);
206 static void GLAPIENTRY
207 _mesa_TexGend(GLenum coord
, GLenum pname
, GLdouble param
)
210 p
[0] = (GLfloat
) param
;
211 p
[1] = p
[2] = p
[3] = 0.0F
;
212 _mesa_TexGenfv( coord
, pname
, p
);
218 _es_GetTexGenfv(GLenum coord
, GLenum pname
, GLfloat
*params
)
220 _mesa_GetTexGenfv(GL_S
, pname
, params
);
225 _es_TexGenf(GLenum coord
, GLenum pname
, GLfloat param
)
227 if (coord
!= GL_TEXTURE_GEN_STR_OES
) {
228 GET_CURRENT_CONTEXT(ctx
);
229 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGen[fx](pname)" );
232 /* set S, T, and R at the same time */
233 _mesa_TexGenf(GL_S
, pname
, param
);
234 _mesa_TexGenf(GL_T
, pname
, param
);
235 _mesa_TexGenf(GL_R
, pname
, param
);
240 _es_TexGenfv(GLenum coord
, GLenum pname
, const GLfloat
*params
)
242 if (coord
!= GL_TEXTURE_GEN_STR_OES
) {
243 GET_CURRENT_CONTEXT(ctx
);
244 _mesa_error( ctx
, GL_INVALID_ENUM
, "glTexGen[fx]v(pname)" );
247 /* set S, T, and R at the same time */
248 _mesa_TexGenfv(GL_S
, pname
, params
);
249 _mesa_TexGenfv(GL_T
, pname
, params
);
250 _mesa_TexGenfv(GL_R
, pname
, params
);
255 static void GLAPIENTRY
256 _mesa_TexGendv(GLenum coord
, GLenum pname
, const GLdouble
*params
)
259 p
[0] = (GLfloat
) params
[0];
260 if (pname
== GL_TEXTURE_GEN_MODE
) {
261 p
[1] = p
[2] = p
[3] = 0.0F
;
264 p
[1] = (GLfloat
) params
[1];
265 p
[2] = (GLfloat
) params
[2];
266 p
[3] = (GLfloat
) params
[3];
268 _mesa_TexGenfv( coord
, pname
, p
);
273 _mesa_TexGenf( GLenum coord
, GLenum pname
, GLfloat param
)
277 p
[1] = p
[2] = p
[3] = 0.0F
;
278 _mesa_TexGenfv(coord
, pname
, p
);
283 _mesa_TexGeni( GLenum coord
, GLenum pname
, GLint param
)
287 p
[1] = p
[2] = p
[3] = 0;
288 _mesa_TexGeniv( coord
, pname
, p
);
293 static void GLAPIENTRY
294 _mesa_GetTexGendv( GLenum coord
, GLenum pname
, GLdouble
*params
)
296 struct gl_texture_unit
*texUnit
;
297 struct gl_texgen
*texgen
;
298 GET_CURRENT_CONTEXT(ctx
);
299 ASSERT_OUTSIDE_BEGIN_END(ctx
);
301 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
302 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGendv(current unit)");
306 texUnit
= _mesa_get_current_tex_unit(ctx
);
308 texgen
= get_texgen(ctx
, texUnit
, coord
);
310 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGendv(coord)");
315 case GL_TEXTURE_GEN_MODE
:
316 params
[0] = ENUM_TO_DOUBLE(texgen
->Mode
);
318 case GL_OBJECT_PLANE
:
319 COPY_4V(params
, texgen
->ObjectPlane
);
322 COPY_4V(params
, texgen
->EyePlane
);
325 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGendv(pname)" );
332 _mesa_GetTexGenfv( GLenum coord
, GLenum pname
, GLfloat
*params
)
334 struct gl_texture_unit
*texUnit
;
335 struct gl_texgen
*texgen
;
336 GET_CURRENT_CONTEXT(ctx
);
337 ASSERT_OUTSIDE_BEGIN_END(ctx
);
339 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
340 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGenfv(current unit)");
344 texUnit
= _mesa_get_current_tex_unit(ctx
);
346 texgen
= get_texgen(ctx
, texUnit
, coord
);
348 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(coord)");
353 case GL_TEXTURE_GEN_MODE
:
354 params
[0] = ENUM_TO_FLOAT(texgen
->Mode
);
356 case GL_OBJECT_PLANE
:
357 if (ctx
->API
!= API_OPENGL
) {
358 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(param)" );
361 COPY_4V(params
, texgen
->ObjectPlane
);
364 if (ctx
->API
!= API_OPENGL
) {
365 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(param)" );
368 COPY_4V(params
, texgen
->EyePlane
);
371 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGenfv(pname)" );
378 _mesa_GetTexGeniv( GLenum coord
, GLenum pname
, GLint
*params
)
380 struct gl_texture_unit
*texUnit
;
381 struct gl_texgen
*texgen
;
382 GET_CURRENT_CONTEXT(ctx
);
383 ASSERT_OUTSIDE_BEGIN_END(ctx
);
385 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
386 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetTexGeniv(current unit)");
390 texUnit
= _mesa_get_current_tex_unit(ctx
);
392 texgen
= get_texgen(ctx
, texUnit
, coord
);
394 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(coord)");
399 case GL_TEXTURE_GEN_MODE
:
400 params
[0] = texgen
->Mode
;
402 case GL_OBJECT_PLANE
:
403 if (ctx
->API
!= API_OPENGL
) {
404 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(param)" );
407 params
[0] = (GLint
) texgen
->ObjectPlane
[0];
408 params
[1] = (GLint
) texgen
->ObjectPlane
[1];
409 params
[2] = (GLint
) texgen
->ObjectPlane
[2];
410 params
[3] = (GLint
) texgen
->ObjectPlane
[3];
413 if (ctx
->API
!= API_OPENGL
) {
414 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(param)" );
417 params
[0] = (GLint
) texgen
->EyePlane
[0];
418 params
[1] = (GLint
) texgen
->EyePlane
[1];
419 params
[2] = (GLint
) texgen
->EyePlane
[2];
420 params
[3] = (GLint
) texgen
->EyePlane
[3];
423 _mesa_error( ctx
, GL_INVALID_ENUM
, "glGetTexGeniv(pname)" );
429 _mesa_init_texgen_dispatch(struct _glapi_table
*disp
)
431 SET_GetTexGendv(disp
, _mesa_GetTexGendv
);
432 SET_GetTexGenfv(disp
, _mesa_GetTexGenfv
);
433 SET_GetTexGeniv(disp
, _mesa_GetTexGeniv
);
434 SET_TexGend(disp
, _mesa_TexGend
);
435 SET_TexGendv(disp
, _mesa_TexGendv
);
436 SET_TexGenf(disp
, _mesa_TexGenf
);
437 SET_TexGenfv(disp
, _mesa_TexGenfv
);
438 SET_TexGeni(disp
, _mesa_TexGeni
);
439 SET_TexGeniv(disp
, _mesa_TexGeniv
);